We live in a very old house built in 1900. It seems that we have had issue after issue after moving here three years ago, plumbing issues, foundation issues, etc. We recently had foundation work done, but now notice the beams in the floor in the kitchen. This is making us think that our subfloor needs to be replaced, but neither one of us really knows much about any of it. The other issue in the kitchen is that it seems one part of it was added on later and the foundation that was used for the addition is slab, but the rest of the house is pier and beam. Because of this, when we got the house leveled, that part in the kitchen is not completely level. In fact, we have a lip where the two foundations meet and now the linoleum floor is cracking and splitting. Any advice on how we should proceed to make the floors in our kitchen tip top?